LEGO Cat Birthday Party 42666-1
LEGO Cat Birthday Party (42666-1) is worth about $28 on the secondary market today, against a $30 retail price. It has 321 pieces, belongs to the Friends theme and was released in 2025. It currently trades below its original retail price.
A creative toy building set for cat-lovers
- Set number
- 42666-1
- Theme
- Friends
- Subtheme
- Pets
- Year
- 2025
- Pieces
- 321
- Minifigures
- 2
- RRP
- $30
- Market value
- $28
- Released
- 2025
- Retirement
- Not retired
Minifigures in LEGO Cat Birthday Party
Cat Birthday Party value by year
From $31 in 2025 to $27 in 2026 so far: −12%. Its highest year was 2025, at $31.
| Year | Value | Change |
|---|---|---|
| 2026 (so far) | $27 | −11.8% |
| 2025 | $31 | — |
Median of each year's market prices, sealed, in US dollars.
What you are paying for
Its 2 priced minifigures are worth about $7 together, roughly 24% of the set's value — high for Friends sets, so most of what you pay for is the figures (typically 16%).
Frequently asked questions
How much is LEGO Cat Birthday Party (42666-1) worth?
LEGO Cat Birthday Party is worth approximately $28 on the secondary market today, based on current listings and completed sales. BrickStats updates this value daily.
Is LEGO Cat Birthday Party retired?
BrickStats does not currently have a confirmed retirement status for Cat Birthday Party (42666-1).
Has LEGO Cat Birthday Party gone up in value?
Not currently. Cat Birthday Party launched at $30 and trades around $28 today, 6.7% below its retail price. The price history chart shows the full trend.
What is the price per piece for Cat Birthday Party?
At its $30 retail price across 321 pieces, Cat Birthday Party works out to about $0.093 per piece. Collectors often use price per piece to judge whether a set is good value.
Is LEGO Cat Birthday Party a good investment?
Cat Birthday Party currently trades 6.7% below its $30 retail price. Past performance is not a prediction — condition, packaging and how long you hold all affect what a set actually sells for. BrickStats reports the numbers rather than giving investment advice.